Power supply



FIG. 1 is a front, right side perspective view of a power supply embodying my new design;

FIG. 2 is a rear, right side perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is an enlarged left side elevation view thereof;

FIG. 6 is an enlarged right side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is an enlarged view of the selected portion 9 in FIG. 1 .

The broken lines shown in the figures depict portions of the power supply that form no part of the claimed design. The dash-dot broken lines in the figures are demarcating enlarged areas and form no part of the claimed design. 

CLAIM The ornamental design for a power supply, as shown and described. 